Double tape recommendation

1-Android multimedia recommendation 7 inch high resolution, sensitive touch 2 GB ram which model would you recommend.

2-parking sensors work with their own tape, if we take their cassette player from the vehicle, a non-working feature emerges, I read in some places to keep it somewhere in the vehicle, finally, the cassette player socket is compatible with double tape, I need an adapter socket or something. I'm waiting for help from experienced friends.